Color

#05148a

#05148a
hex#05148a
rgbrgb(5, 20, 138)
hslhsl(233, 93%, 28%)
oklchoklch(0.305 0.185 265.3)
Closest name: darkblue (#00008b)Relative luminance 0.0237

Colors that go with #05148a

Crimson, Steel Blue and Charcoal lead the list. Each partner is a real named colour with the reason it works — a wheel relationship, a neutral that carries it, or a pairing lifted from a palette or brand system that actually shipped — and every pair opens in the palette tool.

Tints & shades

Every swatch is its own page — click any to analyze it.

Harmonies

Complementary

Open in tool →

#8a7a05

#05578a · #38058a

#8a0514 · #148a05

Split-complementary

Open in tool →

#8a3805 · #578a05

#8a0557 · #8a7a05 · #058a38

Contrast

#05148a as textRatioAAAA largeAAAFix
Aaon white
14.25:1passpasspassPasses AAA — no fix needed.
Aaon black
1.47:1failfailfail
  • AA: use #5366f9 as the text (4.64:1)
  • AAA: use #7f8dfa as the text (7.09:1)
  • AA: or shift the background to #919191 (4.52:1)
  • AAA: or shift the background to #b8b8b8 (7.18:1)

Fixes keep hue and saturation and move lightness only, so the suggestion stays on-brand. Ratios are symmetric: the same numbers apply with #05148a as the background.

Brands using this color

Fonts for this mood

#05148a reads as cool, vivid, dark. The font library is tagged with the same vocabulary:

mcpConnect your agent — build around #05148a
live endpoint

Point any MCP client at the shared colors endpoint and your agent gets the same engine as this page — direct_palette, edit_direction, check_palette, check_contrast — read-only, no key. Every direction it proposes comes with a /colors/d/… link: open it, lock what you like, paste the link back, and the agent edits rather than re-rolls.

endpointhttps://mcp.brandsweets.com/colors/mcp
claude mcp add --transport http brandsweets-colors https://mcp.brandsweets.com/colors/mcp
try this prompt

analyze #05148a and generate a 5-color palette that keeps it as the primary; give me the /palettes/new link

tool url/palettes/new/05148a-9c9cc4-df884e-241f2d-e9eef1?lock=0&style=vibrant

Want the agent to remember your picks and write them into a living brand? Create a free BrandSweets workspace.

Machine-readable: color.md